Intermittent driving mechanism



B. L. VAN ORMAN.

INTERMITTENT DRIVING MECHANISM.

APPLICATION FILED MAYI5, 1922.

:L42 4 Patentefl Sept 12, 1922;

5 SHEETS-SHEET I.

INVENTOR. 192m 4. Van 0/070 A TTORNEY3 B. L. VANv ORMAN.

INTERMITTENT DRIVING MECHANISM. APPLICATION FILED MAYIS, 1922.

1 ,428,724, Patentedfiept- 12 19224.

5 SHEETSSHEET 21 INVENTOR. flex? 4; 14m 0/7274 4 ATTOAAEY B. L. VAN ORMAN. 'INTERMITTENT DRIVING MECHANISM.

APPLICATION FILED MI-IIY I5, I922- I PatentedSept. 12, 11922 5 SHEETSSHEET 3L INVENTOR 152/ 7 A M 0/ /7740 B; L.-VAN ORIVIAN. INTERMITTENT DRIVING MECHANISM.

APPLICATION FILED MAY 15, I922- Patensept 12, 1922..

5 SHEETS-SHEET 4- INVENTOR. 44 0/ /224 B.L. VAN OR/MAN.

/ INTERMITTENT omvme MECHANISM.

APPLICATION FILED MAY 15, 1922- Patentedsept 12, 1922...

5 SHEETS-SHEET 5.

Patented Sept. 12, 1922.

UNITED STATES PAJ'ENT OFFICE.

BERT L. VAN ORMAZN, or nn'raoir, MICHIGAN, AssIGNon TO L. A YOUNG macs- TRIES, Inc, or JETRoIT, MICHIGAN.

INTERMITTENT DRIVING MECHANISM.

Application filed May 15, 1922. Serial No. 561,086.

T 0 all whom it may concern.

Be it known that I, BERT L. VAN ORMAN, a citizen of the United States, residing at Detroit, county of l/Vayne, State of Michigan, have invented certain new and useful Improvements in Intermittent Driving Mechanisms, of which the following is a specification. This invention relates to improvements in intermittent driving mechanisms.

My improved intermittent driving mechanism is especially designed by me for use in driving the cut-oif mechanism of metal bending machines and I have illustrated the same as I have embodied it in that class of machines, shown in my copending application, although these improvements are readily adapted and desirable for use in various other relations.

The main objects of the invention are:

First, to provide an improved intermittent driving mechanism in which the clutch members may be automatically engaged and disengaged to drive the driven part with an intermittent motion.

Second, to provide a structure embodying these advantages in which the parts are yery strong and durable and not likely to get out of repair in use.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a fragmentary plan view of a machine embodying the features of my invention.

Fig. II is a fragmentary elevation .of the parts shown in Fig. I.

Fig. III is a detail section on a line corresponding to line 33 of Fig. II.

Fig. IV is a detail transverse section on a line corresponding to line 4-4 of Fig. II.

Fig. V is a detail transverse section on a line corresponding to line 5-5 of Fig. II. Fi -V sl fragmentary Vi w o a l n corresponding to line 6-6 of Fig. IV, the

shaft being shown in full lines and the clutch members being shown in disengaged position.

Fig. VII is a fragmentary view corresponding to that of Fig. VI with the clutch members in engaged position.

Fig. VIII is a fragmentary view, mainly in section, on a line corresponding to line 88 of Fig. I. I

Fig. IX is a view, partially in section. on a line corresponding to line 99 of Fig. IV.

In the drawing similar reference characters refer to similar parts throughout the several views and the sectional are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1, 1 represent portions of the supporting frame carrying the shaft 2 on which the moving parts are mount-ed. The driving clutch member 3 is provided with a sprocket e: connected to a suitable source of power, not illustrated, the

sprocket 4 being secured to the hub 5 of the driving clutch member which is rotatably supported on the shaft 2. The driven clutch member 6 is provided with a barrel-like hub 7 which is mounted on the sleeve 8 carried by the shaft for longitudinal movement on the sleeve,'thereby permitting the engagement and disengagement of the clutch members which are provided with coacting serrated jaws or teeth. The sleeve 8 is provided with a flange 9 disposed between the clutch members and carrying the pins 10 projecting through holes 11 in the driven clutch member and supporting the coiled springs 12 so that the driven clutch member is normally urged to engaging position. This sleeve 8 rotates with the driven clutch member. v

The driven clutch member carries a driving dog 13 disposed in the longitudinal groove-like way 14: and having a laterally projecting lug 15 at its inner end. The clutch releasing lug 16 is secured in this same groove like way. The coiled spring 17 arranged between the lug 16 and the dog 13 urges the dog to engaging position. i The lug 16 is secured to the driven clutch member barrel by means of pins The driving dog or pawl 13 is adapted to coact with the disk 1011- member 11 the driven member 19 which has a driven sprocket 20 at its outer end and a disk 21 at its inner end notched at 22 to be engaged by the driving dog or pawl 13. This driving pawl is shown in engaging position in Fig. VII and is in disengaged position in Fig. VI, the pawl being disengaged when the driven clutch member is disengaged.

To prevent breakage the disk 21 is secured to the driven member 19 by means ot the shearing pin 23,-see Figs. VI and VII, that is, the pin 23 is of such a character that in the event of undue stress on the parts the pin will break or shear oft and thus avoid injury to other parts.

In the structure illustrated the driven clutch member drives the driven member 19 in one direction only, it being returned to its initial position by means of the coiled springs 24: connected to the sprocket chain 25 which is passed over the sprocket 26 on the driven member 19.

A shock absorbing spring 27' is provided for the chain 25.

The clutch members are held normally disengaged-by the control lever 23 which is pivoted at 29 and provided with a pair of lug-like fingers 30 adapted to coact with the lug 15 of the driving dog 13 and the clutch disengaging lug 16 so that when the lever 28 is in normal position the driven clutch member is disengaged from the driving clutch member and the driving dog is disengaged from the driven member. The control lever is held yieldingly in its engaging position by the coiled spring 31 supported by the pin 32 slidable through the bracket 33 which supports the outer end of the spring. The releasing rod 34 is connected to the swinging end of the lever 28, the releasing rod being controlled by-a suitable means, as by the work actuated trip mechanism of my companion application.

The lever 28 is supported laterally by the segmental member 35, mounted on the outer ends of the pins 10 and the additional supporting pin 36, this supporting member being in position to coact with the lever when it engages the lug 16 and disengages the driven clutch member against the tension of the springs 12.

To stop the parts in proper position I provide a pawl 37 adapted to coact with the disk 88 carried by the driven clutch member, the disk having a locating notch '39 with which the pawl engages. The pawl is held yieldingly upon the periphery of 38 by the coiled spring 40.

To prevent overthrow, I provide a fricadapted to coact with the disk 38, as shown in Fig. VI, the friction brake member being yieldin'glysupported by the spring 42 and provided with a suitable face.

.With this arrangement, when the" control being connected to said driven lever 28 is retracted, as through the rod 34, the springs 12 en age the clutch members and the spring 1 engages the driving dog 13 with the driven member, The control lever is promptly returned when released by means of the spring 31 so that when the revolution is completed the driving dog is disengaged and also the driven member is released.

My improved intermittent driving mechanism is especially designed by me, as stated, for driving the cutoff mechanism of my copending application, referred to. However, it is desirable and readily adapted for use in other relations where an intermittent driving means is desired.

Having thus described my invention, what I claim asnew and ters Patent, is:

1. In a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a sleeve on which said driven clutch member is mounted provided desire to secure by Letclutch members, pins carried by said flange disposed through said driven clutch member, clutch member said pins, a driving dog reciprocatingin said groove in said driven clutch member, a clutch releasing lug secured insaid groove, a spring acting to engage said driving dog, a driven member providedwith a disk notched to receive said dog, said disk being connected to said driven member by a shear pin, means for returning said driven member to its initial position, a stop disk on said driven clutch member, a'return stop pawl coacting therewith, a friction brake member coacting with said stop disk, and a releasing lever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

2. In a structure of the class described,

engaging springs carried bythe combination with a supporting shaft,

a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a sleeve on which said driven clutch member is mounted provided with a disk-like flange disposed between said clutch members,pins carried by said flange disposed through said driven clutch member, clutch member engaging springs carried by said pins, a driving dog reciprocating in said groove in said driven clutch member, a clutch releasing lug securedYin said groove, a spring acting to engage said driving dog, a driven member provided'with a-disk notched to receive said dog, said disk member by a shear pin, means for returning said driven member to its initial position, and a releasing lever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

3. In a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a sleeve on which said driven clutch member is mounted provided with a disk-like flange disposed between said clutch members, pins carried by said flange disposed through said driven clutch member, clutch member engaging springs carried by said pins, a driving dog reciprocating in said groove in said driven clutch member, a clutch releasing lug secured in said groove, a spring acting to engage said driving dog, a driven member provided with a disk notched to receive said dog, and a releasing lever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

4C, In a structure of the class described, the combination with a supporting shaft, a driving clutci member rotatably mounted thereon, a driven clutch member, a spring acting to engage said clutch members, a driven member, a driving dog on said driven clutch member coacting with said driven member, a spring acting to engage said driving dog, means for returning said driven member to its initial position, a stop disk on said driven clutch member, a return stop pawl coacting therewith, a friction brake member coacting with said stop disk, and a control lever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

5. in a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having longitudinal groove therein, a spring acting to engage said clutch members, driving dog reciprocating in said groove in said driven clutch member, a clutch releasing lug secured in said groove, a spring acting to engage said driving dog, a driven member provided with a disk notched to receive said dog, said disk being connected to said driven member by a shear pin, means for returning said driven member to its initial position, a stop disk on said driven clutch member, a return stop pawl coacting therewith, a friction brake member coacting with said stop disk, and a releasing lever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

6. In a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a spring acting to engage said clutch members, a driving dog recipro eating in said groove in said driven clutch member, a clutch releasing lug secured in said groove, a spring acting to engage said driving dog, a driven member provided with a disk notched to receive said dog, said disk being connected to said driven member by a shear pin, means for returning said driven member to its initial position, a stop disk on said driven clutch member, a return stop pawl coacting therewith, and a releasing lever with which said driven clutch member and said driving dog are engaged by the r0- tation of the driven clutch member to release the clutch and said dog.

7. In a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a spring acting to engage said clutch members, a driving dog reciprocating in said groove in said driven clutch member, a clutch releasing lug secured in said groove, a spring acting to engage said driving dog, a driven member provided with a disk notched to receive said dog, said disk being connected to said driven member by a shear pin, means for returning said driven member to its initial position, and a releaslever with which said driven clutch member and said driving dog are engaged by the rotation of the driven clutch memher to release the clutch and said dog.

8. In a structure of the class described, the combination with a supporting shaft, a driving clutch member rotatably mounted thereon, a driven clutch member provided with an elongated hub having a longitudinal groove therein, a spring acting to engage said clutch members, a driving dog reciprocating in said groove in said driven clutch member, a clutch releasing lug secured in said groove, a spring acting to engage said driving dog, a driven member provided with a disk notched to receive said dog, said disk being connected to said driven member by a shear pin, and a releasing lever with which said driven elutchmember and said driving dog are engaged by the rotation of the driven clutch member to release the clutch and said dog.

In witness whereof, I have hereunto set my hand and seal.

BERT L. VAN ORMAN. 1, 3. 

